bson: add todo for format strings.
bson: add todo for format strings.

jqk6/libbson,mongodbinc-interns/libbson,Convey-Compliance/libbson,mongodbinc-interns/libbson,mongodbinc-interns/libbson,ksuarz/libbson,hanumantmk/libbson,ajdavis/libbson,rcsanchez97/libbson,alexeyvo/libbson,alexeyvo/libbson,ksuarz/libbson,ajdavis/libbson,jqk6/libbson,derickr/libbson,rayyang2000/libbson,rayyang2000/libbson,mapr/libbson,paulmelnikow/libbson,remicollet/libbson,mongodb/libbson,mapr/libbson,jqk6/libbson,mongodb/libbson,Machyne/libbson,4Second2None/libbson_tmp,remicollet/libbson,paulmelnikow/libbson,ajdavis/libbson,derickr/libbson,hanumantmk/libbson,4Second2None/libbson_tmp,Machyne/libbson,Machyne/libbson,bjori/libbson,derickr/libbson,rayyang2000/libbson,bjori/libbson,remicollet/libbson,rcsanchez97/libbson,hanumantmk/libbson,paulmelnikow/libbson,rayyang2000/libbson,mongodb/libbson,hanumantmk/libbson,4Second2None/libbson_tmp,alexeyvo/libbson,bjori/libbson,paulmelnikow/libbson,4Second2None/libbson_tmp,Machyne/libbson,jqk6/libbson,Convey-Compliance/libbson,paulmelnikow/libbson,rcsanchez97/libbson,mongodbinc-interns/libbson,remicollet/libbson,mapr/libbson,ksuarz/libbson,Convey-Compliance/libbson,derickr/libbson